His attempts to free himself only succeeded in plunging him deeper into the dark viscous liquid

It was one of the last and largest members of its group

this shows that Ceratodus was not a particularly strong or fast swimmer

Length 327 mm

an extinct group of large predatory birds that lived in the Middle Miocene to Neogene Epoch

Tenontosaurus Escala:1:20 His attempts to free himselfTenontosaurus (T. tillecttorum `Lagarto tendn) es un gnero extinto de dinosaurios ornitpodos que vivieron durante el Aptiense y Albiense del perodo Cretcico inferior, hace aproximadamente 125 100 millones de aos. Fue descubierto por primera vez en la Formacin Cloverly en Montana, Estados Unidos, en 1979. Era un dinosaurio herbvoro que se alimentaba de plantas bajas y se desplazaba en dos patas traseras (aunque se cree tambin que poda andar a 4 patas)